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 TM 55-1905-223-SDC
b. Cruising range. Increased displacement reduces cruising range by increasing the power required for
a given speed.
c.
Stability. If the excess loads are carried high in the ship, stability will be reduced.
d. Strength. Overloading increases the longitudinal stresses imposed on the ship. Extreme overloading,
coupled with heavy weather, may lead to structural distress or even failure.
e. Freeboard. Increased displacement always reduces freeboard. Reduced freeboard will decrease:
(1) Reserve buoyancy.
(2) Range of stability. Reduced freeboard cuts down the range of stability; this will occur in spite of an
excellent initial stability.
(3) Seaworthiness. Reduced freeboard to the weather deck makes the ship wetter in rough weather.
Overloading will seriously reduce the ship's power of survival. The adverse effects of overloading
have long been recognized. Limiting drafts and limiting displacements are prescribed in paragraph 5-34,
along with a warning against overloading.
5-17. LIQUID LOADING. The Trim and Stability Booklet, which is intended for the use of operating
personnel, contains the following conditions of loading for this ship:
a. Light ship condition. This is not an operating condition. It consists of the weight of the ship complete,
ready for service in every respect, including permanent ballast (solid and liquid), and liquids in machinery at
operating levels, but without any items of consumable or variable load.
b. Full-load departure condition. In this condition, the ship is fully loaded for its primary mission at its
point of departure.
c. Beaching condition. This is the condition in which the ship should approach the beach for offloading
and loading.
5-18. LOADING CONDITIONS. Detailed loading instructions are as shown in the Trim and Stability Booklet
for the operating conditions given above.
5-19. LIMITING DECK LOADS. Addition of topside weight reduces stability. Deck loads in excess of the
normal loading of the ship (as described in the Trim and Stability Booklet) tend to impair the ability of the ship
to absorb damage. Officers should weigh the added risk before permitting these limiting deck loads to be
exceeded.
5-9
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